Added support for github, utility to update versions in sbt projects and
 a massive refactor.
Improved error message for Artifactory.
Minor tidy up.
Changed gh-merge so that it deleted the branch afterwards.
Fixed bug in list-stash-repos script.
Changed Git to append ,git to ssh urls.
Append .git to git urls that are missing it.
Fixed typo in api/Updater.
Changed Stash to require a list of reviewers for a pull request.
Bug fix of Stash git urls.
Documentation and tidy up of API.
Changed from travis-ci.com to travis-ci.org.